/**
* Tests the implementation of getCharacterStream(long pos, long length).
*
* @throws Exception
*/
public void testGetCharacterStreamLong() throws Exception {
String str1 = "This is a test String. This is a test String";
Reader r1 = new java.io.StringReader(str1);
PreparedStatement ps = prepareStatement("insert into BLOBCLOB(ID, CLOBDATA) values(?,?)");
int id = BlobClobTestSetup.getID();
ps.setInt(1, id);
ps.setCharacterStream(2, r1);
ps.execute();
ps.close();
Statement st = createStatement();
ResultSet rs = st.executeQuery("select CLOBDATA from " + "BLOBCLOB where ID=" + id);
rs.next();
Clob clob = rs.getClob(1);
Reader r_1 = clob.getCharacterStream(2L, 5L);
String str2 = str1.substring(1, 6);
Reader r_2 = new java.io.StringReader(str2);
assertEquals(r_2, r_1);
rs.close();
st.close();
}
/**
* Tests that the Reader got from a empty Clob reflects new data in the underlying Clob.
*
* @throws Exception
*/
public void testGetCharacterStreamCreateClob() throws Exception {
// The String that will be used
// to do the inserts into the
// Clob.
String str = "Hi I am the insert String";
// The string reader corresponding to this
// string that will be used in the comparison.
StringReader r_string = new StringReader(str);
// create the empty Clob.
Clob clob = getConnection().createClob();
// Get the Reader from this
// Clob
Reader r_clob = clob.getCharacterStream();
// set the String into the clob.
clob.setString(1, str);
// Now compare the reader corresponding
// to the string and the reader obtained
// form the clob to see if they match.
assertEquals(r_string, r_clob);
}
/**
* Test that <code>Clob.getCharacterStream(long,long)</code> works on CLOBs that are streamed from
* store. (DERBY-2891)
*/
public void testGetCharacterStreamLongOnLargeClob() throws Exception {
getConnection().setAutoCommit(false);
// create large (>32k) clob that can be read from store
final int size = 33000;
StringBuilder sb = new StringBuilder(size);
for (int i = 0; i < size; i += 10) {
sb.append("1234567890");
}
final int id = BlobClobTestSetup.getID();
PreparedStatement ps =
prepareStatement("insert into blobclob(id, clobdata) values (?,cast(? as clob))");
ps.setInt(1, id);
ps.setString(2, sb.toString());
ps.executeUpdate();
ps.close();
Statement s = createStatement();
ResultSet rs = s.executeQuery("select clobdata from blobclob where id = " + id);
assertTrue(rs.next());
Clob c = rs.getClob(1);
// request a small region of the clob
BufferedReader r = new BufferedReader(c.getCharacterStream(4L, 3L));
assertEquals("456", r.readLine());
r.close();
c.free();
rs.close();
s.close();
rollback();
}
private static String read(Clob c) throws SQLException, IOException {
StringBuilder sb = new StringBuilder((int) c.length());
Reader r = c.getCharacterStream();
char[] cbuf = new char[CLOBBUFFERSIZE];
int n;
while ((n = r.read(cbuf, 0, cbuf.length)) != -1) {
sb.append(cbuf, 0, n);
}
return sb.toString();
}
private static String read(Clob c) throws SQLException, IOException {
StringBuffer sb = new StringBuffer((int) c.length());
Reader r = c.getCharacterStream();
char[] cbuf = new char[2048];
int n = 0;
while ((n = r.read(cbuf, 0, cbuf.length)) != -1) {
if (n > 0) {
sb.append(cbuf, 0, n);
}
}
return sb.toString();
}
/**
* Tests that the data updated in a Clob is always reflected in the Reader got. Here the updates
* are done using both a Writer obtained from this Clob and using Clob.setString.
*
* @throws Exception
*/
public void testGetCharacterStreamClobUpdates() throws Exception {
// The String that will be used
// to do the inserts into the
// Clob.
String str1 = "Hi I am the insert string";
// The String that will be used in the
// second series of updates
String str2 = "Hi I am the update string";
// create the empty Clob.
Clob clob = getConnection().createClob();
// Get the Reader from this
// Clob
Reader r_BeforeWrite = clob.getCharacterStream();
// Get a writer from this Clob
// into which the data can be written
Writer w = clob.setCharacterStream(1);
char[] chars_str1 = new char[str1.length()];
str2.getChars(0, str1.length(), chars_str1, 0);
w.write(chars_str1);
// Doing a setString now on the Clob
// should reflect the same extension
// in the InputStream also.
clob.setString((str1.length()) + 1, str2);
// Now get the reader from the Clob after
// the update has been done.
Reader r_AfterWrite = clob.getCharacterStream();
// Now compare the two readers to see that they
// contain the same data.
assertEquals(r_BeforeWrite, r_AfterWrite);
}
/**
* Tests the implementation for the free() method in the Clob interface.
*
* @throws SQLException if an error occurs during releasing the Clob resources
*/
public void testFreeandMethodsAfterCallingFree()
throws IllegalAccessException, InvocationTargetException, SQLException {
clob = BlobClobTestSetup.getSampleClob(getConnection());
// call the buildHashSetMethod to initialize the
// HashSet with the method signatures that are exempted
// from throwing a SQLException after free has been called
// on the Clob object.
buildHashSet();
InputStream asciiStream = clob.getAsciiStream();
Reader charStream = clob.getCharacterStream();
clob.free();
// testing the idempotence of the free() method
// the method can be called multiple times on
// the first are treated as no-ops
clob.free();
// to the free method so testing calling
// a method on this invalid object should throw
// an SQLException
buildMethodList(clob);
}
/**
* Tests the exceptions thrown by the getCharacterStream (long pos, long length) for the following
* conditions a) pos <= 0 b) pos > (length of LOB) c) length < 0 d) pos + length > (length of
* LOB).
*
* @throws SQLException
*/
public void testGetCharacterStreamLongExceptionConditions() throws SQLException {
String str1 = "This is a test String. This is a test String";
Reader r1 = new java.io.StringReader(str1);
PreparedStatement ps = prepareStatement("insert into BLOBCLOB(ID, CLOBDATA) values(?,?)");
int id = BlobClobTestSetup.getID();
ps.setInt(1, id);
ps.setCharacterStream(2, r1);
ps.execute();
ps.close();
Statement st = createStatement();
ResultSet rs = st.executeQuery("select CLOBDATA from " + "BLOBCLOB where ID=" + id);
rs.next();
Clob clob = rs.getClob(1);
// check the case where pos <= 0
try {
// set pos as negative
clob.getCharacterStream(-2L, 5L);
// Should not come here. The exception has to be thrown.
fail("FAIL: Expected SQLException for pos being negative " + "not thrown");
} catch (SQLException sqle) {
// The SQLState for the exception thrown when pos <= 0 is XJ070
assertSQLState("XJ070", sqle);
}
// check for the case pos > length of clob
try {
// set the pos to any value greater than the Clob length
clob.getCharacterStream(clob.length() + 1, 5L);
// Should not come here. The exception has to be thrown.
fail(
"FAIL: Expected SQLException for position being greater than "
+ "length of LOB not thrown");
} catch (SQLException sqle) {
// The SQLState for the exception thrown when pos > length of Clob
// is XJ076
assertSQLState("XJ087", sqle);
}
// check for the case when length < 0
try {
// set length as negative
clob.getCharacterStream(2L, -5L);
// Should not come here. The exception has to be thrown.
fail("Fail: expected exception for the length being negative " + "not thrown");
} catch (SQLException sqle) {
// The SQLState for the exception thrown when length < 0 of Clob
// is XJ071
assertSQLState("XJ071", sqle);
}
// check for the case when pos + length > length of Clob
try {
// set pos + length > length of Clob
clob.getCharacterStream((clob.length() - 4), 10L);
// Should not come here. The exception has to be thrown.
fail(
"Fail: expected exception for the sum of position and length"
+ " being greater than the LOB size not thrown");
} catch (SQLException sqle) {
// The SQLState for the exception thrown when length < 0 of Clob
// is XJ087
assertSQLState("XJ087", sqle);
}
}
/**
* Convert an existing data object to the specified JDBC type.
*
* @param callerReference an object reference to the caller of this method; must be a <code>
* Connection</code>, <code>Statement</code> or <code>ResultSet</code>
* @param x the data object to convert
* @param jdbcType the required type constant from <code>java.sql.Types</code>
* @return the converted data object
* @throws SQLException if the conversion is not supported or fails
*/
static Object convert(Object callerReference, Object x, int jdbcType, String charSet)
throws SQLException {
// handle null value
if (x == null) {
switch (jdbcType) {
case java.sql.Types.BIT:
case JtdsStatement.BOOLEAN:
return Boolean.FALSE;
case java.sql.Types.TINYINT:
case java.sql.Types.SMALLINT:
case java.sql.Types.INTEGER:
return INTEGER_ZERO;
case java.sql.Types.BIGINT:
return LONG_ZERO;
case java.sql.Types.REAL:
return FLOAT_ZERO;
case java.sql.Types.FLOAT:
case java.sql.Types.DOUBLE:
return DOUBLE_ZERO;
default:
return null;
}
}
try {
switch (jdbcType) {
case java.sql.Types.TINYINT:
if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? INTEGER_ONE : INTEGER_ZERO;
} else if (x instanceof Byte) {
return new Integer(((Byte) x).byteValue() & 0xFF);
} else {
long val;
if (x instanceof Number) {
val = ((Number) x).longValue();
} else if (x instanceof String) {
val = new Long(((String) x).trim()).longValue();
} else {
break;
}
if (val < Byte.MIN_VALUE || val > Byte.MAX_VALUE) {
throw new SQLException(
Messages.get("error.convert.numericoverflow", x, getJdbcTypeName(jdbcType)),
"22003");
} else {
return new Integer(new Long(val).intValue());
}
}
case java.sql.Types.SMALLINT:
if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? INTEGER_ONE : INTEGER_ZERO;
} else if (x instanceof Short) {
return new Integer(((Short) x).shortValue());
} else if (x instanceof Byte) {
return new Integer(((Byte) x).byteValue() & 0xFF);
} else {
long val;
if (x instanceof Number) {
val = ((Number) x).longValue();
} else if (x instanceof String) {
val = new Long(((String) x).trim()).longValue();
} else {
break;
}
if (val < Short.MIN_VALUE || val > Short.MAX_VALUE) {
throw new SQLException(
Messages.get("error.convert.numericoverflow", x, getJdbcTypeName(jdbcType)),
"22003");
} else {
return new Integer(new Long(val).intValue());
}
}
case java.sql.Types.INTEGER:
if (x instanceof Integer) {
return x;
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? INTEGER_ONE : INTEGER_ZERO;
} else if (x instanceof Short) {
return new Integer(((Short) x).shortValue());
} else if (x instanceof Byte) {
return new Integer(((Byte) x).byteValue() & 0xFF);
} else {
long val;
if (x instanceof Number) {
val = ((Number) x).longValue();
} else if (x instanceof String) {
val = new Long(((String) x).trim()).longValue();
} else {
break;
}
if (val < Integer.MIN_VALUE || val > Integer.MAX_VALUE) {
throw new SQLException(
Messages.get("error.convert.numericoverflow", x, getJdbcTypeName(jdbcType)),
"22003");
} else {
return new Integer(new Long(val).intValue());
}
}
case java.sql.Types.BIGINT:
if (x instanceof BigDecimal) {
BigDecimal val = (BigDecimal) x;
if (val.compareTo(MIN_VALUE_LONG_BD) < 0 || val.compareTo(MAX_VALUE_LONG_BD) > 0) {
throw new SQLException(
Messages.get("error.convert.numericoverflow", x, getJdbcTypeName(jdbcType)),
"22003");
} else {
return new Long(val.longValue());
}
} else if (x instanceof Long) {
return x;
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? LONG_ONE : LONG_ZERO;
} else if (x instanceof Byte) {
return new Long(((Byte) x).byteValue() & 0xFF);
} else if (x instanceof BigInteger) {
BigInteger val = (BigInteger) x;
if (val.compareTo(MIN_VALUE_LONG_BI) < 0 || val.compareTo(MAX_VALUE_LONG_BI) > 0) {
throw new SQLException(
Messages.get("error.convert.numericoverflow", x, getJdbcTypeName(jdbcType)),
"22003");
} else {
return new Long(val.longValue());
}
} else if (x instanceof Number) {
return new Long(((Number) x).longValue());
} else if (x instanceof String) {
return new Long(((String) x).trim());
} else {
break;
}
case java.sql.Types.REAL:
if (x instanceof Float) {
return x;
} else if (x instanceof Byte) {
return new Float(((Byte) x).byteValue() & 0xFF);
} else if (x instanceof Number) {
return new Float(((Number) x).floatValue());
} else if (x instanceof String) {
return new Float(((String) x).trim());
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? FLOAT_ONE : FLOAT_ZERO;
}
break;
case java.sql.Types.FLOAT:
case java.sql.Types.DOUBLE:
if (x instanceof Double) {
return x;
} else if (x instanceof Byte) {
return new Double(((Byte) x).byteValue() & 0xFF);
} else if (x instanceof Number) {
return new Double(((Number) x).doubleValue());
} else if (x instanceof String) {
return new Double(((String) x).trim());
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? DOUBLE_ONE : DOUBLE_ZERO;
}
break;
case java.sql.Types.NUMERIC:
case java.sql.Types.DECIMAL:
if (x instanceof BigDecimal) {
return x;
} else if (x instanceof Number) {
return new BigDecimal(x.toString());
} else if (x instanceof String) {
return new BigDecimal((String) x);
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? BIG_DECIMAL_ONE : BIG_DECIMAL_ZERO;
}
break;
case java.sql.Types.VARCHAR:
case java.sql.Types.CHAR:
if (x instanceof String) {
return x;
} else if (x instanceof Number) {
return x.toString();
} else if (x instanceof Boolean) {
return ((Boolean) x).booleanValue() ? "1" : "0";
} else if (x instanceof Clob) {
Clob clob = (Clob) x;
long length = clob.length();
if (length > Integer.MAX_VALUE) {
throw new SQLException(Messages.get("error.normalize.lobtoobig"), "22000");
}
return clob.getSubString(1, (int) length);
} else if (x instanceof Blob) {
Blob blob = (Blob) x;
long length = blob.length();
if (length > Integer.MAX_VALUE) {
throw new SQLException(Messages.get("error.normalize.lobtoobig"), "22000");
}
x = blob.getBytes(1, (int) length);
}
if (x instanceof byte[]) {
return toHex((byte[]) x);
}
return x.toString(); // Last hope!
case java.sql.Types.BIT:
case JtdsStatement.BOOLEAN:
if (x instanceof Boolean) {
return x;
} else if (x instanceof Number) {
return (((Number) x).intValue() == 0) ? Boolean.FALSE : Boolean.TRUE;
} else if (x instanceof String) {
String tmp = ((String) x).trim();
return ("1".equals(tmp) || "true".equalsIgnoreCase(tmp)) ? Boolean.TRUE : Boolean.FALSE;
}
break;
case java.sql.Types.VARBINARY:
case java.sql.Types.BINARY:
if (x instanceof byte[]) {
return x;
} else if (x instanceof Blob) {
Blob blob = (Blob) x;
return blob.getBytes(1, (int) blob.length());
} else if (x instanceof Clob) {
Clob clob = (Clob) x;
long length = clob.length();
if (length > Integer.MAX_VALUE) {
throw new SQLException(Messages.get("error.normalize.lobtoobig"), "22000");
}
x = clob.getSubString(1, (int) length);
}
if (x instanceof String) {
//
// Strictly speaking this conversion is not required by
// the JDBC standard but jTDS has always supported it.
//
if (charSet == null) {
charSet = "ISO-8859-1";
}
try {
return ((String) x).getBytes(charSet);
} catch (UnsupportedEncodingException e) {
return ((String) x).getBytes();
}
} else if (x instanceof UniqueIdentifier) {
return ((UniqueIdentifier) x).getBytes();
}
break;
case java.sql.Types.TIMESTAMP:
if (x instanceof DateTime) {
return ((DateTime) x).toTimestamp();
} else if (x instanceof java.sql.Timestamp) {
return x;
} else if (x instanceof java.sql.Date) {
return new java.sql.Timestamp(((java.sql.Date) x).getTime());
} else if (x instanceof java.sql.Time) {
return new java.sql.Timestamp(((java.sql.Time) x).getTime());
} else if (x instanceof java.lang.String) {
return java.sql.Timestamp.valueOf(((String) x).trim());
}
break;
case java.sql.Types.DATE:
if (x instanceof DateTime) {
return ((DateTime) x).toDate();
} else if (x instanceof java.sql.Date) {
return x;
} else if (x instanceof java.sql.Time) {
return DATE_ZERO;
} else if (x instanceof java.sql.Timestamp) {
GregorianCalendar cal = (GregorianCalendar) calendar.get();
cal.setTime((java.util.Date) x);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
// VM1.4+ only return new java.sql.Date(cal.getTimeInMillis());
return new java.sql.Date(cal.getTime().getTime());
} else if (x instanceof java.lang.String) {
return java.sql.Date.valueOf(((String) x).trim());
}
break;
case java.sql.Types.TIME:
if (x instanceof DateTime) {
return ((DateTime) x).toTime();
} else if (x instanceof java.sql.Time) {
return x;
} else if (x instanceof java.sql.Date) {
return TIME_ZERO;
} else if (x instanceof java.sql.Timestamp) {
GregorianCalendar cal = (GregorianCalendar) calendar.get();
// VM 1.4+ only cal.setTimeInMillis(((java.sql.Timestamp)x).getTime());
cal.setTime((java.util.Date) x);
cal.set(Calendar.YEAR, 1970);
cal.set(Calendar.MONTH, 0);
cal.set(Calendar.DAY_OF_MONTH, 1);
// VM 1.4+ only return new java.sql.Time(cal.getTimeInMillis());*/
return new java.sql.Time(cal.getTime().getTime());
} else if (x instanceof java.lang.String) {
return java.sql.Time.valueOf(((String) x).trim());
}
break;
case java.sql.Types.OTHER:
return x;
case java.sql.Types.JAVA_OBJECT:
throw new SQLException(
Messages.get(
"error.convert.badtypes", x.getClass().getName(), getJdbcTypeName(jdbcType)),
"22005");
case java.sql.Types.LONGVARBINARY:
case java.sql.Types.BLOB:
if (x instanceof Blob) {
return x;
} else if (x instanceof byte[]) {
return new BlobImpl(getConnection(callerReference), (byte[]) x);
} else if (x instanceof Clob) {
//
// Convert CLOB to BLOB. Not required by the standard but we will
// do it anyway.
//
Clob clob = (Clob) x;
try {
if (charSet == null) {
charSet = "ISO-8859-1";
}
Reader rdr = clob.getCharacterStream();
BlobImpl blob = new BlobImpl(getConnection(callerReference));
BufferedWriter out =
new BufferedWriter(new OutputStreamWriter(blob.setBinaryStream(1), charSet));
// TODO Use a buffer to improve performance
int c;
while ((c = rdr.read()) >= 0) {
out.write(c);
}
out.close();
rdr.close();
return blob;
} catch (UnsupportedEncodingException e) {
// Unlikely to happen but fall back on in memory copy
x = clob.getSubString(1, (int) clob.length());
} catch (IOException e) {
throw new SQLException(
Messages.get("error.generic.ioerror", e.getMessage()), "HY000");
}
}
if (x instanceof String) {
//
// Strictly speaking this conversion is also not required by
// the JDBC standard but jTDS has always supported it.
//
BlobImpl blob = new BlobImpl(getConnection(callerReference));
String data = (String) x;
if (charSet == null) {
charSet = "ISO-8859-1";
}
try {
blob.setBytes(1, data.getBytes(charSet));
} catch (UnsupportedEncodingException e) {
blob.setBytes(1, data.getBytes());
}
return blob;
}
break;
case java.sql.Types.LONGVARCHAR:
case java.sql.Types.CLOB:
if (x instanceof Clob) {
return x;
} else if (x instanceof Blob) {
//
// Convert BLOB to CLOB
//
Blob blob = (Blob) x;
try {
InputStream is = blob.getBinaryStream();
ClobImpl clob = new ClobImpl(getConnection(callerReference));
Writer out = clob.setCharacterStream(1);
// TODO Use a buffer to improve performance
int b;
// These reads/writes are buffered by the underlying blob buffers
while ((b = is.read()) >= 0) {
out.write(hex[b >> 4]);
out.write(hex[b & 0x0F]);
}
out.close();
is.close();
return clob;
} catch (IOException e) {
throw new SQLException(
Messages.get("error.generic.ioerror", e.getMessage()), "HY000");
}
} else if (x instanceof Boolean) {
x = ((Boolean) x).booleanValue() ? "1" : "0";
} else if (!(x instanceof byte[])) {
x = x.toString();
}
if (x instanceof byte[]) {
ClobImpl clob = new ClobImpl(getConnection(callerReference));
clob.setString(1, toHex((byte[]) x));
return clob;
} else if (x instanceof String) {
return new ClobImpl(getConnection(callerReference), (String) x);
}
break;
default:
throw new SQLException(
Messages.get("error.convert.badtypeconst", getJdbcTypeName(jdbcType)), "HY004");
}
throw new SQLException(
Messages.get("error.convert.badtypes", x.getClass().getName(), getJdbcTypeName(jdbcType)),
"22005");
} catch (NumberFormatException nfe) {
throw new SQLException(
Messages.get("error.convert.badnumber", getJdbcTypeName(jdbcType)), "22000");
}
}
